Spanish 1 Peseta "Juan Carlos I" Coin (Aluminium-Bronze Composition)
Coin - Numismatic / Ex-Circulation Currency · None. The yellow appearance typical of this coin series is due to the Aluminium-Bronze alloy, which can mimic the look of gold when new but lacks precious metal content.
Purity: 0% (Not Gold). This is a base-metal coin composed of Aluminium-Bronze (approx. 90% Copper, 10% Aluminium). There is no gold content present.
Type
Coin - Numismatic / Ex-Circulation Currency
Purity
0% (Not Gold). This is a base-metal coin composed of Aluminium-Bronze (approx. 90% Copper, 10% Aluminium). There is no gold content present.
Gold Type
None. The yellow appearance typical of this coin series is due to the Aluminium-Bronze alloy, which can mimic the look of gold when new but lacks precious metal content.
Weight
3.5 grams (Standard weight for this 1975-1980s Spanish minting specification).
Description
A heavily worn and oxidized Spanish 1 Peseta coin. Featured on the coin is a portrait of King Juan Carlos I and the Spanish coat of arms. Originally minted as a high-volume circulation coin, the alloy was intended for durability and cost-effectiveness rather than intrinsic metal value.
Key Features
Features the rectangular box around the word 'PESETA' and the profile of King Juan Carlos I, common in Spanish currency prior to the adoption of the Euro.
Color & Finish
Dull, oxidized grey-brown with heavy surface corrosion/toning. Original finish would have been a matte yellow-gold hue, but the current state shows significant environmental damage.
Hallmarks & Stamps
Obverse/Reverse legends: "JUAN CARLOS I", "ESPAÑA", "1 PESETA". No gold hallmarks are present as it is legal tender base-metal currency.
Dimensions Estimate
21mm in diameter, 1.8mm thickness.
Gemstones & Inlays
None. Standard struck numismatic design.
Clasp & Closure
Not applicable. Reeded or smooth coin edge (depending on specific mint year variety).
Chain & Links
Not applicable.
Craftsmanship Details
Mass-produced industrial minting using heavy-duty steel dies. The striking quality is standard for late 20th-century circulation currency.
Authentication Indicators
Red Flag: Item shows grey/black oxidation and pitting inconsistent with gold. Gold does not corrode or turn grey in this manner. The design matches a known base-metal Spanish circulation coin.
Origin & Maker
Spain; Real Casa de la Moneda (Royal Mint of Spain, Madrid).
Era & Period
Modern Era - Kingdom of Spain (Post-Franco Transition period, 1975-2001).
Age Estimate
Circa 1975-1980 (Based on the Juan Carlos I portrait and the specific '1 Peseta' design shown).
Cultural Significance
Represents the restoration of the Monarchy in Spain following the death of Francisco Franco; Juan Carlos I was a central figure in Spain's transition to democracy.
Condition Notes
Poor to Fair (G-4 to VG-8). Significant surface corrosion, pitting, and environmental encrustation that has turned the alloy a dark grey. The design is barely legible.
Value Estimate
Melt Value: <$0.05 USD. Collector Value: Negligible (approximately $0.10 - $0.25 USD) due to poor condition and high mintage numbers.
Care & Maintenance
This item has no precious metal value. It can be cleaned with mild soap, but the existing corrosion is likely permanent structural damage to the base-metal alloy.
Similar Items
Spanish 2, 5, or 25 Pesetas coins. Often confused with 19th-century Spanish Gold Escudos or Pesetas by novice collectors due to the historical yellow color of uncirculated aluminium-bronze.
Interesting Facts
The Peseta was the currency of Spain from 1869 until 2002. While Spain minted gold coins in the 19th century, the 20th-century Pesetas were almost exclusively base metals like copper-nickel or aluminium-bronze.